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4 Installation
Remark:
When mounting the instrument, please take into consideration that the sensor
valuates also reflected light, and accumulates it to the direct incident sun light. At
locations with reflecting surfaces the measuring values are considerably higher than
they would be in the free field, or in front of a hardly reflecting surface.
The instrument must not be installed in the shades of buildings, parts of buildings,
masts, antennas, trees, bushes etc., as otherwise the proper ambient brightness or
the direct sun radiation is not acquired correctly.
Attention:
The electrical connection must be carried out only by a qualified
expert.
The instrument must be opened only in dry conditions.
The uncovered electronics must not be damaged.
4.1 Mechanical Mounting
The brightness transmitter is designed to be mounted to a horizontal surface out-of-doors. It is
recommended to carefully choose a location which is free of shades and reflections.
For installation please unscrew and remove the housing cover. Through the now accessible mounting
boreholes the instrument is fastened by the respective screws.
For the optimum acquisition of the sun position the brightness transmitter is aligned by means of a
compass, so that the side of the housing with the north marking indicates to the (geographical)
Northern direction.
Figure 3: North marking
